View unanswered posts | View active topics It is currently Thu Oct 18, 2018 5:01 am



Reply to topic  [ 7 posts ] 
 RetroBrew - another place for homebrew computers 
Author Message

Joined: Wed Jan 09, 2013 6:54 pm
Posts: 996
Image

RetroBrew Computers is a forum and wiki for people building their own machines: SBCs, Eurocard, S-100 or whatever. Ranging from 6502 and 6809 through Z80 and Z180 to 68000. And with RSS feeds too!
The Mini-M68K and KISS-68030 systems look pretty nice.

via a comment over on 6502.org

(RetroBrew seems to be a successor of the N8VEM discussion groups.)


Wed Apr 20, 2016 10:45 am
Profile

Joined: Tue Dec 11, 2012 8:03 am
Posts: 250
Location: California
Thanks. That forum looks rather new. The board in your picture is rather nicely laid out, too.

_________________
http://WilsonMinesCo.com/ lots of 6502 resources


Wed Apr 20, 2016 8:00 pm
Profile WWW

Joined: Wed Jan 09, 2013 6:54 pm
Posts: 996
I see the wiki has an index of quite a number of boards in progress, many for sale at reasonable cost:
https://retrobrewcomputers.org/doku.php ... dinventory

It also has a space for individuals to post about their builds:
https://retrobrewcomputers.org/doku.php ... ages:start


Sat Oct 01, 2016 7:49 pm
Profile

Joined: Wed Jan 09, 2013 6:54 pm
Posts: 996
Another project just reached an interesting level of maturity over at RetroBrew:

Tiny68K, 68000 SBC with 16 Meg memory for CP/M-68K

Image


Wed Nov 08, 2017 1:21 pm
Profile

Joined: Sat Dec 23, 2017 2:01 am
Posts: 4
BigEd wrote:
Another project just reached an interesting level of maturity over at RetroBrew:

Tiny68K, 68000 SBC with 16 Meg memory for CP/M-68K

Image


Just browsing the old posts and find my Tiny68K design being mentioned, cool!
The wiki page for Tiny68K is here:
https://www.retrobrewcomputers.org/doku ... bc:tiny68k

The bus-connected compactflash IDE interface is not reliable for some brands of CF, so I redesigned it and added isolation resistors for the 16-bit data lines. It is working fine now. I also added a non-maskable interrupt button and a real-time clock. The 2nd board revision is here:
https://www.retrobrewcomputers.org/doku ... ny68k_rev2

The main motivation for yet another 68000 homebrew was cost reduction. I have thought it was possible to build a $10 68000 SBC using 10cm*10cm pc board, obsolete parts (old CPLD, 16meg SIMM, and NMOS 68000), and cheap serial flash, but the resulting board was too spartan and it was still more than $10. I compromised and added a CF-IDE, socketed the major components, add a 7-seg display and end up with a $20 SBC that's CP/M-68K capable. Looking back, I'm happy with the compromise.


Sat Dec 23, 2017 2:38 am
Profile

Joined: Wed Jan 09, 2013 6:54 pm
Posts: 996
Welcome - $20 is very good indeed.

(Edit: fixed up the photo link too.)


Sat Dec 23, 2017 8:03 am
Profile

Joined: Sat Dec 23, 2017 2:01 am
Posts: 4
BigEd wrote:
Welcome - $20 is very good indeed.

(Edit: fixed up the photo link too.)


A clarification regarding the price of Tiny68K: On the retrobrew board inventory page I listed it for $20 as kit where SMT components are assembled already but the thru-hole components still need to be soldered. It is $27 fully assembled & tested including a compact flash drive.
https://www.retrobrewcomputers.org/doku ... dinventory


Sat Dec 23, 2017 2:07 pm
Profile
Display posts from previous:  Sort by  
Reply to topic   [ 7 posts ] 

Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group
Designed by ST Software